Weaver sells this one to work with thier own tools, looks nice to me, anybody have one?
For centering one may be able to use a self centering dowling jig used in woodworking. Ive been meaning to try mine but they will need modification. I have 2, one US made one which is really nice and accurate, Pro Center brand, and one from Harbour Freight which is not so accurate.
I have a table top drill press that will eventually get a woodworking type fence and use that for repetitive tasks.
YMMV
Jeremy